<script setup lang="ts">
import { User, Lock } from '@element-plus/icons-vue'
import { ref, onMounted } from 'vue'
import { ElMessage } from 'element-plus'
//控制注册与登录表单的显示， 默认显示注册
const isRegister = ref(false)
// 定义数据模型
const registerData = ref({
  username: '',
  password: '',
  rePassword: ''
})

// 记住我
const rememberMe = ref(false)

// 校验密码的函数
const checkRePassword = (rule, value, callback) => {
  if (value === '') {
    callback(new Error('请再次确认密码'))
  } else if (value !== registerData.value.password) {
    callback(new Error('请确保两次输入的密码一样'))
  } else {
    callback()
  }

}
// 定义表单校验规则
const rules = {
  username: [
    { required: true, message: '请输入用户名', trigger: 'blur' },
    { min: 5, max: 16, message: '长度为5~16位非空字符', trigger: 'blur' }
  ],
  password: [
    { required: true, message: '请输入密码', trigger: 'blur' },
    { min: 5, max: 16, message: '长度为5~16位非空字符', trigger: 'blur' }
  ],
  rePassword: [
    { validator: checkRePassword, trigger: 'blur' }
  ]
}

// 调用后台接口完成注册
import { userRegisterService, userLoginService } from '@/apis/user.js';
const register = async () => {
  // registerData是一个响应式对象，如果要获取值，需要.value
  let result = await userRegisterService(registerData.value) as any;
  // if (result.code === 0) {
  //     // 成功
  //     alert(result.msg ? result.msg : '注册成功');
  // } else {
  //     alert('注册失败')
  // }
  // alert(result.msg ? result.msg : '注册成功');
  ElMessage.success(result.msg ? result.msg : '注册成功')
}

// 绑定数据，复用注册表单的数据模型
// 表单数据校验
// 登录函数'
import { useTokenStore } from '@/stores/token.js';
import { useRouter } from 'vue-router'
import { useUserStore } from '@/stores/user'
const router = useRouter()
const tokenStore = useTokenStore()
const userStore = useUserStore()
const login = async () => {
  // 调用接口完成登录
  let result = await userLoginService(registerData.value) as any;
  // if (result.code === 0) {
  //     // 成功
  //     alert(result.msg ? result.msg : '登录成功');
  // } else {
  //     alert('登录失败')
  // }
  // alert(result.msg ? result.msg : '注册成功');
  ElMessage.success(result.msg ? result.msg : '登录成功')
  // 把得到的token存储到pinia中
  tokenStore.setToken(result.data)
  // 跳转到首页 路由完成跳转
  tokenStore.setToken(result.data)
  userStore.setUser(registerData.value.username, registerData.value.password, userStore.rememberMe)
  router.push('/')
}


// 定义函数，清空数据模型的数据
const clearRegisterData = () => {
  registerData.value = {
    username: '',
    password: '',
    rePassword: ''
  }
}
onMounted(() => {
  userStore.loadRememberedUser()
  if (userStore.username) {
    registerData.value.username = userStore.username
    registerData.value.password = userStore.password
  }
})
</script>

<template>
  <div class="login-container">
    <!-- 左侧图片区域 -->
    <div class="login-left"></div>
    <!-- 右侧登录表单区域 -->
    <div class="login-right">
      <div class="login-register">
      <!-- 注册表单 -->
        <el-form ref="form" size="large" autocomplete="off" v-if="isRegister"  :model="registerData" :rules="rules">
          <el-form-item>
            <h1>注册</h1>
          </el-form-item>
          <el-form-item>
            <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
          </el-form-item>
          <el-form-item>
            <el-input :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerData.password"></el-input>
          </el-form-item>
          <el-form-item>
            <el-input :prefix-icon="Lock" type="password" placeholder="请再次输入密码" v-model="registerData.rePassword"></el-input>
          </el-form-item>

          <div class="button">
            <!-- 按钮 -->
              <!-- 返回登录 -->
            <el-form-item>
              <el-link type="info" :underline="false" @click="isRegister = false; clearRegisterData()">
                ← 返回
              </el-link>
            </el-form-item>
              <!-- 注册 -->
            <el-form-item>
              <el-button class="button" type="primary" auto-insert-space @click="register">
                注册
              </el-button>
            </el-form-item>
          </div>
        </el-form>
      
      <!-- 登录表单 -->
        <el-form ref="form" size="large" autocomplete="off" v-else :model="registerData" :rules="rules">
          <el-form-item>
            <h1>登录</h1>
          </el-form-item>
          <el-form-item prop="username">
            <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
          </el-form-item>
          <el-form-item prop="password">
            <el-input name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerData.password"></el-input>
          </el-form-item>
          <el-form-item class="flex">
            <div class="flex">
              <el-checkbox v-model="userStore.rememberMe">记住我</el-checkbox>
              <el-link type="primary" :underline="false">忘记密码？</el-link>
            </div>
          </el-form-item>

          <div class="button">
            <!-- 按钮 -->
              <!-- 返回登录 -->
            <el-form-item>
                <el-button class="button" type="primary" auto-insert-space @click="login">登录</el-button>
              </el-form-item>
              <el-form-item>
                <el-link type="info" :underline="false" @click="isRegister = true; clearRegisterData()">
                    注册 →
                </el-link>
            </el-form-item>
          </div>
        </el-form>
      </div>
    </div>
  </div> 
</template>



<style style="scss" scoped>
.login-container {
  display: flex;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  height: 100%;
}

.login-left {
  flex: 1;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  padding: 2rem;

  .login-left-content {
    text-align: center;

    h1 {
      font-size: 2.5rem;
      margin-bottom: 1rem;
    }

    p {
      font-size: 1.2rem;
      opacity: 0.8;
    }
  }
}

.login-right {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #f5f7fa;

  .login-register {
    width: 30vh;

    .flex {
      width: 100%;
      display: flex;
      justify-content: space-between;
      margin: 0;
    }

    .button {
      margin: 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: 1rem;
    }
  }
}
</style>